# GPT-5.2-Codex: Product update

GPT-5.2-Codex: Product update. First seen 11 Sep 2026. The context window is 400,000 tokens. The maximum output is 128,000 tokens. 8 evidence links.

- Kind: Launch
- Developer: OpenAI
- Confidence: Confirmed
- First seen: 2026-09-11T22:09:46.186Z
- Model: [GPT-5.2-Codex](https://alexgetman.com/models/openai/gpt-5-2-codex/)
- Canonical: https://alexgetman.com/signals/2026/09/11/gpt-5-2-codex-xhigh/

## Evidence links

- [Arena · leaderboards](https://openai.com/index/introducing-gpt-5-2-codex)
- [OpenCode · discovery](https://opencode.ai/data/openai/gpt-5-2-codex)
- [OpenAI · docs · discovery](https://platform.openai.com/docs/models/gpt-5.2-codex)
- [OpenRouter](https://openrouter.ai/openai/gpt-5.2-codex)
- [Artificial Analysis · benchmarks](https://artificialanalysis.ai/models)
- [models.dev · catalogue](https://models.dev/#gpt-5.2-codex)
- [OpenAI · model index](https://developers.openai.com/api/docs/models/gpt-5.2-codex)
- [OpenAI · deprecations](https://platform.openai.com/docs/deprecations)